147973-05-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 147973-05-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,7,9,7 and 3 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 147973-05:
(8*1)+(7*4)+(6*7)+(5*9)+(4*7)+(3*3)+(2*0)+(1*5)=165
165 % 10 = 5
So 147973-05-5 is a valid CAS Registry Number.
147973-05-5Relevant articles and documents
Synthesis of cyclododeca-2,8-diyne-1,7-dione
Bodenmann,Keese
, p. 1467 - 1470 (2007/10/02)
The 12-membered carbocyclic compound 5, containing 2 α,β-unsaturated alkynone functionalities is prepared from 5-hexyn-1-ol in 9 steps. Ring closure is achieved by reductive C-C bond formation between the terminal iodoalkyne and aldehyde group using CrCl
